I am trying to make a beamer presentation with embedded sounds using pdflatex.A \sound control sequence is defined in the beamer multimedia package. When I use it, a button appears in my document as it should, but clicking it just produces an error message in all of the pdf display programs that I have tried (xpdf, acroread and evince on redhat linux). I think that the problem is that the viewers need to have a default application specified for playing the sound, but I don't know how to specify it. The system as a whole has a default sound player, specified via/etc/mimetypes and /etc/mailcap, and it works, so the pdf viewers must be looking somewhere else.

The error message from xpdf is Syntax Error: Unknown link action type: 'Sound'from acroread Cannot find an appropriate player for the soundand from evinceUnimplemented action: POPPLER_ACTION_UNKNOWN